SunSpark Technology Inc. SST-305M

Mono-c-Si

305 W Pmax

39.98 V Voc

9.89 A Isc

32.35 V Vmp

9.44 A Imp

18.56 % eff.

0.7723 FF

60 cells

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IV & PV Curves at STC (1000 W/m², 25 °C)

IV Curves at Multiple Conditions

Irradiance sweep at 25 °C

Temperature sweep at 1000 W/m²

Single-Diode Model Parameters

Source: California Energy Commission module list · retrieved via SAM library · energy.ca.gov · All data sources

Parameter	Symbol	Value	Unit
Nameplate (STC)
STC Power	STC	305.384	W
PTC Power	PTC	285.6	W
Open-circuit voltage	V_oc_ref	39.98	V
Short-circuit current	I_sc_ref	9.89	A
Max-power voltage	V_mp_ref	32.35	V
Max-power current	I_mp_ref	9.44	A
Fill factor	FF	0.7723	—
Efficiency (STC)	η	18.56	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.002927	A/°C
Voc temperature coefficient	beta_oc	-0.091514	V/°C
Pmax temperature coefficient	gamma_r	-0.3116	%/°C
NOCT	T_NOCT	45.6	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.36395	V
Light-generated current (ref)	I_L_ref	9.89061	A
Saturation current (ref)	I_o_ref	1.84e-12	A
Series resistance	R_s	0.36012	Ω
Shunt resistance (ref)	R_sh_ref	5868.035	Ω
Cells in series	N_s	20	—
CEC Adjust factor	Adjust	3.5839	%

The CEC list gives 20 cells in series, which puts 2.00 V on each cell. A silicon cell gives 0.55 to 0.80 V, so PV Ivy uses 60 cells in series for the .PAN file and Similar Modules, found from the CEC count times 3 (it counts one bypass substring).

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 60 (inferred, CEC lists 20)

Module area 1.645 m²

NOCT 45.6 °C

Temp. coefficient of Pmax -0.312 %/°C

Temp. coefficient of Voc -0.229 %/°C

Temp. coefficient of Isc 0.030 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

Same Test Data

2 listings with identical nameplate test data, one per frame, color or backsheet version.

SST-305M Main listing, this page
SST-305MB

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